CVE-2021-48018

EUVD-2021-34888
Vyper from 0.2.13 before 0.2.15 allocates storage slots for @nonreentrant reentrancy locks at the same locations as contract storage variables. When a function using @nonreentrant is called, setting the lock overwrites the overlapping storage variable, corrupting contract state and breaking the contract's intended logic.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
7.4 HIGH
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 23.76%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
vyperlangvyper
0.2.13 ≤
𝑥
< 0.2.15
CNA
Common Weakness Enumeration
References
https://github.com/vyperlang/vyper/security/advisories/GHSA-7f92-rr6w-cq64
https://www.vulncheck.com/advisories/vyper-0.2.13-before-0.2.15-storage-corruption-via-nonreentrant-decorator